title: Serological responses to Cryptosporidium antigens among users of surface- vs. ground-water sources.
mesh_terms: D000328:Adult; D000368:Aged; D000383:Agriculture; D000818:Animals; D000917:Antibody Formation; D000953:Antigens, Protozoan / Q000032:analysis*; D015153:Blotting, Western; D003458:Cryptosporidium / Q000276:immunology* / Q000472:pathogenicity*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D033661:Oocysts; D045483:Rivers; D012698:Serologic Tests; D012722:Sewage; D014505:Urban Population; D014871:Water Microbiology; D014881:Water Supply
chemical_list: D000953:Antigens, Protozoan; D012722:Sewage